By Conroy, Czech, Litvinoff, Miles
By Han Suyin, Suyin, Han, Hussein, Aamer
By Jules Pretty
By Pim Martens
By Bronwyn Hayward, Andrew Dobson, Tim Jackson (University of Surrey, UK), ROGER HART
By Stephen Bass, Hannah Reid, David Satterthwaite, Paul Steele
By Rosalind Eyben
By JOHN KIRKBY, Phil O'Keefe, Lloyd Timberlake
By Paul Demeny, Geoffrey McNicoll
By Donald Bruce, Ann Bruce
By United Nations Environment Programme
By Real World Coalition
By Maggie Black, Jannet King
By Jenny Griffiths, Mala Rao, Fiona Adshead, Allison Thorpe
By Joanne O'Brien, Martin Palmer
By Jonathon Porritt
By Ian Scoones
By Michael Edwards
By Paul Hawken, Amory B. Lovins, L. Hunter Lovins
By Stephen Bass, Barry Dalal-Clayton
By William M. Adams
By Gwyn Prins, Robert Stamp
By Ernst Ulrich von Weizsacker, Oran R. Young (University of California Santa Barbara, USA), Matthias Finger, Marianne Beisheim
By Berkeley Hill (Imperial College, University of London, UK)
By Marc Lappe, Britt Bailey, Tim Lang (Professor of Food Policy, Thames Valley University)
By Urdang, Stephanie
By Brown, Lester R., Kane, Hal
By Wisner, Ben
By Boserup, Ester, Mitter, Swasti